Stefan is highly wealthy and attributes his good health largely to his positive living habits of adhering to a nutritious diet and regular exercise, avoiding harmful substances, and minimizing and managing stress. Stefan is most likely to

be very highly educated

Explanation:

Stefan is more likely to be educated because statistics have shown that individuals such as this who ate wealthy and understand good health practices and routine are most likely highly educated. These class of individuals in the United States are mostly in the wealthy class while individuals who fall below the poverty line are mostly uneducated and from minority groups